Titan Security Key
Common manufacturersGoogle
Design firmGoogle
IntroducedOctober 15, 2019
CostUS$25 - US$35

The Titan Security Key is a FIDO-compliant security token developed by Google which contains the Titan M cryptoprocessor which is also developed by Google. It was first released on October 15, 2019.[1]


Depending on the features, the key costs $25-$35,[2] but Google has provided them for free to high-risk users.[3] It is considered a more secure form of multi-factor authentication to log in to first-party and third-party services and to enroll in Google's advanced protection program. In 2021, Google removed the Bluetooth model due to concerns about its security and reliability.[2]

In November 2023, Google announced a model with passkey support.[4]


The Bluetooth "T1" and "T2" models initially had a security bug that allowed anyone within 30 feet to make a clone of the key.[5] The security firm NinjaLab has been able to extract the key using a side channel attack.[6] In 2019, Google has put a bug bounty up to US$1.5 million on the Titan chip.[7]

Newer versions and model numbers include:[8]

1. USB-A/NFC (K9T)

2. Bluetooth/NFC/USB (K13T)

3. USB-C/NFC (YT1)

4. USB-C/NFC supporting U2F and FIDO2 (K40T)

While none of these included publicly disclosed security vulnerabilities, Google has discontinued selling Bluetooth versions of the keys in August 2021,[9] although Bluetooth keys continue to work with their warranties honored.[10]


  1. ^ "USB-C Titan Security Keys - available tomorrow in the US". Google Online Security Blog. Retrieved 2022-02-03.
  2. ^ a b Clark, Mitchell (2021-08-09). "Google's new Titan security key lineup won't make you choose between USB-C and NFC". The Verge. Retrieved 2022-02-04.
  3. ^ Page, Carly (2021-10-08). "Google to give security keys to 'high risk' users targeted by government hackers". TechCrunch. Retrieved 2021-10-09.
  4. ^ Newman, Lily Hay. "Google's New Titan Security Key Adds Another Piece to the Password-Killing Puzzle". Wired. ISSN 1059-1028. Retrieved 2023-11-15.
  5. ^ Khalid, Amrita (2019-05-15). "Google recalls some Titan security keys after finding Bluetooth vulnerability". Engadget. Retrieved 2022-02-03.
  6. ^ Goodin, Dan (2021-01-08). "Hackers can clone Google Titan 2FA keys using a side channel in NXP chips". Ars Technica. Retrieved 2021-10-09.
  7. ^ Porter, Jon (2019-11-21). "Google really wants you to hack the Pixel's Titan M security chip". The Verge. Retrieved 2021-10-09.
  8. ^ "Safety & Warranty Guides for Google Titan Security Key (Prior Versions)". Google Support. Google. Retrieved 31 December 2022.
  9. ^ Brand, Christiaan. "Simplifying Titan Security Key options for our users". Google Online Security Blog. Google. Retrieved 31 December 2022.
  10. ^ Kovacs, Eduard. "Google Discontinuing Bluetooth Titan Security Key". securityweek.com. Security Week. Retrieved 31 December 2022.